The height of crowns, the center height of clinical crowns, and the width and length of the dental arch were measured with a digital vernier calliper.
用数显游标卡尺测量实验组模型牙冠高度，牙弓宽度和长度，计算出临床冠中心高度，并与对照组进行对比分析研究。
Not all of dental arch width and length will relapse after retention.
经治疗和保持后，上下牙弓宽度和长度并非一定会复发。
Objective: To investigate the role of dental collar and post length in determining the stress distribution indentin.
目的：将桩长与牙本质领结合起来进行研究，揭示二者对牙体应力的影响。
应用推荐